gui: run jadx-gui without console

jadx-gui/build.gradle

 apply plugin: 'application'
 
-mainClassName = "jadx.gui.JadxGUI"
+mainClassName = 'jadx.gui.JadxGUI'
 
 dependencies {
     compile(project(":jadx-core"))
@@ -28,6 +28,16 @@ jar {
     }
 }
 
+startScripts {
+    doLast {
+        def str = windowsScript.text
+        str = str.replaceAll('java.exe', 'javaw.exe')
+        str = str.replaceAll('"%JAVA_EXE%" %DEFAULT_JVM_OPTS%',
+                'start "jadx-gui" /B "%JAVA_EXE%" %DEFAULT_JVM_OPTS%')
+        windowsScript.text = str
+    }
+}
+
 test {
     jacoco {
         // coveralls plugin not support multi-project